a(n) = 21*2^n + 10*4^n + 15*3^n + 3*6^n + 6*5^n + 7^n + 28.
A254464
a(n) = 21*2^n + 10*4^n + 15*3^n + 3*6^n + 6*5^n + 7^n + 28.
Terms
- a(0) =84a(1) =210a(2) =714a(3) =2982a(4) =14178a(5) =73470a(6) =404634a(7) =2331462a(8) =13906578a(9) =85232910a(10) =533860554a(11) =3403329942a(12) =22012307778a(13) =144090486750a(14) =952693102074
External references
- oeis: A254464